SG6742 Datasheet, PDF (11/14 Pages) Fairchild Semiconductor – Highly Integrated Green-Mode PWM Controller

Highly Integrated Green-Mode PWM Controller
REFERENCE CIRCUIT (12V/5A)
Product Specification
SG6742
F1
CN1
L1
1
2
3
CN1
T1
C1
VZ1
C2
4
C3
D4
BD1
1
+
C4
C5
R1
D2
4 T2 8
5
6
2
3
7
R2
1
3
Q1
C6
2
1
L2
2
VO+
L3
+
+
C7
C8
VO+
D1
VO-
R3
U1 SG6742
1 _{GND GATE} 8
2
FB
VDD
7
C12
3 _{NC SENSE} 6
4 _HV
RT ⁵
R4
D3
1
2
+
C9
Q2
1
R5
R6
C10
R7
THER1
R8
U2
VO+
R9
R10
C11
R
U3
R11
BOM
Reference
BD1
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
D1
D2
D3
D4
F1
L1
L2
L3
Component
BD 4A/600V
XC 0.68µF/300V
XC 0.1µF/300V
YC 222pF/Y1
EC 120µF/400V
CC 0.01µF/500V
CC 102pF/100V
EC 1000µF/25V
EC 470µF/25V
EC 22µF/50V
CC 470pF/50V
CC 222pF/50V
CC 103pF/50V
Zener Diode 15V 1/2W (option)
BYV95C
FR103
1N4007
FUSE 4A/250V
Inductor (900µH)
Inductor (2µH)
Inductor (900µH)
Reference
Q1
Q2
R1
R2
R3
R4
R5
R6
R7
R8
R9
R10
R11
THER1
T1
T2
U1
U2
U3
VZ1
Component
STP20-100CT
MOS 7A/600V
R 100Kohm 1/2W
R 47ohm 1/4W
R 100Kohm 1/2W
R 20ohm 1/8W
R 100ohm 1/8W
R 4.7Kohm 1/8W
R 0.3ohm 2W
R 680ohm 1/8W
R 4.7Kohm 1/8W
R 150Kohm 1/8W
R 39Kohm 1/8W
Thermistor TTC104
10mH
600µH(PQ2620)
IC SG6742
IC PC817
IC TL431
VZ 9G
© System General Corp.
Version 1.0.1 (IAO33.0083.B0)
- 11 -
www.sg.com.tw • www.fairchildsemi.com
September 24, 2007